Thomas Kesselheim is a postdoc at Max Planck Institute for Informatics in Saarbrücken, Germany. He received his PhD in Computer Science from RWTH Aachen University. Afterwards, he was a postdoc at Cornell University. He works on online algorithms with partly stochastic input, such as secretary problems and prophet inequalities. Another area of recent research interest is algorithmic mechanism design, particularly the analysis of non-truthful mechanisms.